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diff --git a/sys/netlink/netlink_snl.h b/sys/netlink/netlink_snl.h
--- a/sys/netlink/netlink_snl.h
+++ b/sys/netlink/netlink_snl.h
@@ -1039,23 +1039,23 @@
uint32_t size;
struct nlmsghdr *hdr;
struct snl_state *ss;
- bool error;
};
-static inline void
+static inline bool
snl_init_writer(struct snl_state *ss, struct snl_writer *nw)
{
- nw->size = SNL_WRITER_BUFFER_SIZE;
- nw->base = (char *)snl_allocz(ss, nw->size);
- if (nw->base == NULL) {
- nw->error = true;
- nw->size = 0;
- }
+ char *base;
- nw->offset = 0;
- nw->hdr = NULL;
- nw->error = false;
- nw->ss = ss;
+ if (__predict_false((base =
+ snl_allocz(ss, SNL_WRITER_BUFFER_SIZE)) == NULL))
+ return (NULL);
+ *nw = (struct snl_writer){
+ .base = base,
+ .size = SNL_WRITER_BUFFER_SIZE,
+ .ss = ss,
+ };
+
+ return (true);
}
static inline bool
@@ -1066,13 +1066,8 @@
while (new_size < nw->size + sz)
new_size *= 2;
- if (nw->error)
+ if (__predict_false(snl_allocz(nw->ss, new_size) == NULL))
return (false);
-
- if (snl_allocz(nw->ss, new_size) == NULL) {
- nw->error = true;
- return (false);
- }
nw->size = new_size;
void *new_base = nw->ss->lb->base;
@@ -1254,10 +1249,8 @@
static inline void
snl_end_attr_nested(const struct snl_writer *nw, int off)
{
- if (!nw->error) {
- struct nlattr *nla = snl_restore_msg_offset(nw, off, struct nlattr);
- nla->nla_len = NETLINK_ALIGN(snl_get_msg_offset(nw) - off);
- }
+ struct nlattr *nla = snl_restore_msg_offset(nw, off, struct nlattr);
+ nla->nla_len = NETLINK_ALIGN(snl_get_msg_offset(nw) - off);
}
static inline struct nlmsghdr *
@@ -1277,33 +1270,27 @@
return (hdr);
}
-static void
+static inline void
snl_abort_msg(struct snl_writer *nw)
{
- if (nw->hdr != NULL) {
- int offset = (char *)(&nw->base[nw->offset]) - (char *)(nw->hdr);
+ assert(nw->hdr != NULL);
- nw->offset -= offset;
- nw->hdr = NULL;
- }
+ nw->offset -= (char *)(&nw->base[nw->offset]) - (char *)(nw->hdr);
+ nw->hdr = NULL;
}
static inline struct nlmsghdr *
snl_finalize_msg(struct snl_writer *nw)
{
- if (nw->error)
- snl_abort_msg(nw);
- if (nw->hdr != NULL) {
- struct nlmsghdr *hdr = nw->hdr;
+ struct nlmsghdr *hdr = nw->hdr;
- int offset = (char *)(&nw->base[nw->offset]) - (char *)(nw->hdr);
- hdr->nlmsg_len = offset;
- hdr->nlmsg_seq = snl_get_seq(nw->ss);
- nw->hdr = NULL;
+ assert(hdr != NULL);
- return (hdr);
- }
- return (NULL);
+ hdr->nlmsg_len = (char *)(&nw->base[nw->offset]) - (char *)(nw->hdr);
+ hdr->nlmsg_seq = snl_get_seq(nw->ss);
+ nw->hdr = NULL;
+
+ return (hdr);
}
static inline bool
diff --git a/tests/sys/netlink/test_snl.c b/tests/sys/netlink/test_snl.c
--- a/tests/sys/netlink/test_snl.c
+++ b/tests/sys/netlink/test_snl.c
@@ -65,13 +65,13 @@
int optval = 1;
ATF_CHECK(setsockopt(ss.fd, SOL_NETLINK, NETLINK_CAP_ACK, &optval, sizeof(optval)) == 0);
- snl_init_writer(&ss, &nw);
+ ATF_CHECK(snl_init_writer(&ss, &nw));
struct nlmsghdr *hdr = snl_create_msg_request(&nw, 255);
ATF_CHECK(hdr != NULL);
ATF_CHECK(snl_reserve_msg_object(&nw, struct ifinfomsg) != NULL);
snl_add_msg_attr_string(&nw, 143, "some random string");
- ATF_CHECK(snl_finalize_msg(&nw) != NULL);
+ snl_finalize_msg(&nw);
ATF_CHECK(snl_send_message(&ss, hdr));
@@ -107,13 +107,13 @@
optval = 1;
ATF_CHECK(setsockopt(ss.fd, SOL_NETLINK, NETLINK_EXT_ACK, &optval, sizeof(optval)) == 0);
- snl_init_writer(&ss, &nw);
+ ATF_CHECK(snl_init_writer(&ss, &nw));
struct nlmsghdr *hdr = snl_create_msg_request(&nw, 255);
ATF_CHECK(hdr != NULL);
ATF_CHECK(snl_reserve_msg_object(&nw, struct ifinfomsg) != NULL);
snl_add_msg_attr_string(&nw, 143, "some random string");
- ATF_CHECK(snl_finalize_msg(&nw) != NULL);
+ snl_finalize_msg(&nw);
ATF_CHECK(snl_send_message(&ss, hdr));
@@ -147,13 +147,13 @@
int optval = 1;
ATF_CHECK(setsockopt(ss.fd, SOL_NETLINK, NETLINK_EXT_ACK, &optval, sizeof(optval)) == 0);
- snl_init_writer(&ss, &nw);
+ ATF_CHECK(snl_init_writer(&ss, &nw));
struct nlmsghdr *hdr = snl_create_msg_request(&nw, 255);
ATF_CHECK(hdr != NULL);
ATF_CHECK(snl_reserve_msg_object(&nw, struct ifinfomsg) != NULL);
snl_add_msg_attr_string(&nw, 143, "some random string");
- ATF_CHECK(snl_finalize_msg(&nw) != NULL);
+ snl_finalize_msg(&nw);
ATF_CHECK(snl_send_message(&ss, hdr));
@@ -205,12 +205,12 @@
if (!snl_init(&ss, NETLINK_ROUTE))
atf_tc_fail("snl_init() failed");
- snl_init_writer(&ss, &nw);
+ ATF_CHECK(snl_init_writer(&ss, &nw));
struct nlmsghdr *hdr = snl_create_msg_request(&nw, RTM_GETLINK);
ATF_CHECK(hdr != NULL);
ATF_CHECK(snl_reserve_msg_object(&nw, struct ifinfomsg) != NULL);
- ATF_CHECK(snl_finalize_msg(&nw) != NULL);
+ snl_finalize_msg(&nw);
uint32_t seq_id = hdr->nlmsg_seq;
ATF_CHECK(snl_send_message(&ss, hdr));
diff --git a/tests/sys/netlink/test_snl_generic.c b/tests/sys/netlink/test_snl_generic.c
--- a/tests/sys/netlink/test_snl_generic.c
+++ b/tests/sys/netlink/test_snl_generic.c
@@ -83,7 +83,7 @@
if (!snl_init(&ss, NETLINK_GENERIC))
atf_tc_fail("snl_init() failed");
- snl_init_writer(&ss, &nw);
+ ATF_CHECK(snl_init_writer(&ss, &nw));
hdr = snl_create_genl_msg_request(&nw, GENL_ID_CTRL, CTRL_CMD_GETFAMILY);
snl_add_msg_attr_string(&nw, CTRL_ATTR_FAMILY_NAME, "nlctrl");
hdr = snl_finalize_msg(&nw);

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